Fedora 43 libmicrohttpd Null Pointer Dereference Advisory 2026-65a08d1312
fedora
April 12, 2026
Update to 1.0.3-1
Summary
GNU libmicrohttpd is a small C library that is supposed to make it
easy to run an HTTP server as part of another application.
Key features that distinguish libmicrohttpd from other projects are:
* C library: fast and small
* API is simple, expressive and fully reentrant
* Implementation is http 1.1 compliant
* HTTP server can listen on multiple ports
* Support for IPv6
* Support for incremental processing of POST data
* Creates binary of only 25k (for now)
* Three different threading models
Update Information:
Update to 1.0.3-1
Topics Covered
Change Log
* Thu Apr 2 2026 Martin Gansser
References
[ 1 ] Bug #2413882 - CVE-2025-59777 libmicrohttpd: GNU libmicrohttpd null pointer dereference [fedora-42]
https://bugzilla.redhat.com/show_bug.cgi?id=2413882
[ 2 ] Bug #2413888 - CVE-2025-59777 libmicrohttpd: GNU libmicrohttpd null pointer dereference [fedora-43]
https://bugzilla.redhat.com/show_bug.cgi?id=2413888
[ 3 ] Bug #2413893 - CVE-2025-62689 libmicrohttpd: GNU libmicrohttpd null pointer dereference [fedora-42]
https://bugzilla.redhat.com/show_bug.cgi?id=2413893
[ 4 ] Bug #2413896 - CVE-2025-62689 libmicrohttpd: GNU libmicrohttpd null pointer dereference [fedora-43]
https://bugzilla.redhat.com/show_bug.cgi?id=2413896
[ 5 ] Bug #2454160 - libmicrohttpd-1.0.3 is available
https://bugzilla.redhat.com/show_bug.cgi?id=2454160
Update Instructions
This update can be installed with the "dnf" update program. Use su -c 'dnf upgrade --advisory FEDORA-2026-65a08d1312' at the command line. For more information, refer to the dnf documentation available at http://dnf.readthedocs.io/en/latest/command_ref.html#upgrade-command-label
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Name: libmicrohttpd
Product: Fedora 43
Version: 1.0.3
Release: 1.fc43
Summary: Lightweight library for embedding a webserver in applications
Topics Covered
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